CN102350563A - Sheet welding method - Google Patents
Sheet welding method Download PDFInfo
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- CN102350563A CN102350563A CN2011102840753A CN201110284075A CN102350563A CN 102350563 A CN102350563 A CN 102350563A CN 2011102840753 A CN2011102840753 A CN 2011102840753A CN 201110284075 A CN201110284075 A CN 201110284075A CN 102350563 A CN102350563 A CN 102350563A
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Abstract
The invention discloses a sheet welding method which comprises the following steps of: assembling sheets on a support device, wherein at least three sheets are in butt joint to form at least two butt-joint grooves; tack-welding the butt-joint grooves, and fixing the sheets; pressing and clamping the sheets on the support device with a fixture; adjusting the welding technological parameters of a welding gun; and welding the sheets, wherein two welding guns perform equidirectional symmetric welding from the middle butt-joint groove towards the butt-joint grooves on the two sides. In the invention, two welding guns are adopted to perform equidirectional symmetric welding from the middle butt-joint groove towards the butt-joint grooves on the two sides. Through the invention, the stress produced by the sheets during the welding can be effectively balanced, and the heat can be quickly dispersed so that the deformation of the welded sheets is more uniform, the deformation generated by the welding of large-size sheets can be reduced, the regulation and maintenance workload after welding is reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to solder technology, especially relate to a kind of plate welding method.
Background technology
Plate comprises plane plate or curved surface plate, and the plane plate comprises flat sheet and plane section bar, and the curved surface plate comprises curved surface sheet material and curved section bar again.In practical applications, a plurality of planes plate or curved surface plate need be welded into large-sized plate, large-sized plate is used for the exterior skin material of train, boats and ships or airborne vehicle.
In the prior art, large-sized plate welding method does, with a plurality of plates butt joint assemblings, forms the butt joint groove, adopts one welding gun one root bead wire bond to be connect (single rifle monofilament welds), or adopts a welding gun two root bead silks (single rifle Double Wire Welding).
During prior art welding large scale section bar, single rifle monofilament welding efficiency is low, and successively along each butt joint groove welding, the large scale plate distortion of welding back is bigger, and the adjusting workload is big.
Though single rifle double wire welding speed is fast, single rifle once can only weld one weld seam, thereby welding efficiency is low, and the large scale plate distortion of welding back is also bigger, and the adjusting workload is big.
Can find out; The plate welding method of prior art; No matter be single rifle monofilament weldering or single rifle Double Wire Welding, because weld seam is very long, the stress that produces between the plate during welding is balance effectively; Can produce local deformation; Because the accumulation of distortion, the seam deformation of more past both sides is big more, has a strong impact on plate flatness or profile tolerance after the welding; The adjusting workload is bigger, and production efficiency is low.
And, all be that every weld seam welds successively owing to adopt single rifle monofilament weldering or single rifle Double Wire Welding, welding efficiency is lower.
Summary of the invention
The present invention provides a kind of plate welding method, in order to solve defective of the prior art, can reduce the deflection after plate welds, and reduces the adjusting workload, enhances productivity.
The invention provides a kind of plate welding method, comprising:
On supporting tool, assemble plate, at least three plates are docked, form at least two butt joint grooves;
Tack welding butt joint groove is fixed plate;
Press card, use anchor clamps that plate is pressed and be stuck on the supporting tool;
The welding condition of adjustment welding gun;
Plate welding, two welding guns from the butt joint groove of centre to the equidirectional symmetry welding of the butt joint groove of both sides.
Plate welding method provided by the invention, compared with prior art, the present invention adopts two welding guns to weld to the equidirectional symmetry of the butt joint groove of both sides from the butt joint groove of centre.The stress that produces of balance when welding plate effectively, and distribute heat rapidly, thereby make that the sheet metal deformation after the welding is more even, the distortion that produces in the time of can reducing large-sized plate welding reduces postwelding adjusting workload, enhances productivity.
Description of drawings
The schematic flow sheet of the plate welding method that Fig. 1 provides for first embodiment of the invention;
The front view of the plate reverse side welding of the plate welding method that Fig. 2 provides for second embodiment of the invention;
Fig. 3 is the vertical view of Fig. 2;
The front view of the positive welding of the plate of the plate welding method that Fig. 4 provides for second embodiment of the invention;
Fig. 5 is the vertical view of Fig. 4;
The enforcement sketch map of the plate welding method that Fig. 6 provides for third embodiment of the invention.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer; To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention carried out clear, intactly description, obviously; Described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With reference to Fig. 1, the schematic flow sheet of the plate welding method that Fig. 1 provides for first embodiment of the invention.
In the first embodiment of the present invention, the plate welding method comprises:
Step 10 is assembled plate on supporting tool, at least three plates are docked, and forms at least two butt joint grooves.Particularly, the cross section of butt joint groove is U type, V-type, HV type, Y type, HY type or I type, and the joint of butt joint groove leaves the gap of 0～4.0mm.
Step 20, tack welding butt joint groove is fixed plate; Particularly, the tack welding length of tack welding butt joint groove is 50～200mm, and the tack welding spacing is 500～1000mm.Tack welding length is increased by the butt joint groove of butt joint groove to the centre of both sides successively; Because the deflection of middle butt joint groove welding is less than the deflection of both sides butt joint groove; Thereby the tack welding length that groove is docked in both sides is set to the tack welding length less than centre butt joint groove, can reduce the distortion of both sides butt joint groove weld.
Step 30 is pressed card, uses anchor clamps that plate is pressed and is stuck on the supporting tool.
Particularly, can use the anchor clamps of band clamping arm, press the plate that is stuck in the outside, plate is pressed on the supporting tool through clamping arm.
Step 40, the welding condition of adjustment welding gun;
Particularly, adopt double-wire welding gun, the welding condition of adjustment welding gun comprises: the preceding wire bond of adjustment double-wire welding gun connects electric arc, and it is short and hard to make that said preceding wire bond connects electric arc, has penetration power; The back wire bond of adjustment double-wire welding gun connects electric arc, makes that said back silk electric arc is long and soften, have diversity, and a power is high by 6～20% after the preceding silk power ratio of said double-wire welding gun; Adjust the double-wire welding gun angle, make vertical with plate, the back silk of preceding silk of double-wire welding gun become 15～25 degree angles with plate.Technological parameter through the adjustment double-wire welding gun has guaranteed that the welding arc of double-wire welding gun does not disturb mutually, thereby has effectively guaranteed the welding quality of double-wire welding gun.
Step 50, plate welding, two welding guns from the butt joint groove of centre to the equidirectional symmetry welding of the butt joint groove of both sides.
Plate welding method in that the foregoing description provides can be welded plane section bar or sheet material, also can weld curve section bar or sheet material.
Below in conjunction with accompanying drawing 2-5, specify the concrete welding of the plate welding method that present embodiment provides and press the card process.The front view of the plate reverse side welding of the plate welding method that Fig. 2 provides for second embodiment of the invention; Fig. 3 is the vertical view of Fig. 2; The front view of the positive welding of the plate of the plate welding method that Fig. 4 provides for second embodiment of the invention; Fig. 5 is the vertical view of Fig. 4.
In the present embodiment, step 10 is assembled plate on supporting tool, with six plane section bar butt joints, forms five butt joint grooves.Particularly; Cushion block 23 on the supporting surface that supporting tool comprises five brace tables 22 being installed on the level reference 21, be placed on brace table 22; Six plane section bars are positioning reference with vertical locating surface 24; Be assembled into workpiece 27 to be welded; The other end of workpiece 27 to be welded with respect to vertical locating surface 24 held out against fixing workpiece 27 to be welded through screw holding device 25.
Five butt joint grooves that the reverse side of workpiece 27 to be welded forms; The second butt joint groove the 32, the 3rd of the first butt joint groove 31 in the middle of being respectively, both sides docks groove 33, the 4th butt joint groove 32s and the 5th butt joint groove 33s, and the second butt joint groove 32 and the 4th butt joint groove 32s are symmetrical, the 3rd butt joint groove 33 docks groove 33s symmetry with the 5th.The supporting surface of brace table 22 is a rectangle; The length direction of the supporting surface of brace table 22 is identical with the length direction of butt joint groove; The cross section of each butt joint groove is a V-type; The joint of butt joint groove leaves the gap of 0.5mm; Scolder fully fuses with the plane section bar that joins when being convenient to weld, and improves weld strength.
Step 20, tack welding butt joint groove is fixed plate; Particularly, the tack welding length of tack welding butt joint groove is 70mm, and the tack welding spacing is 800mm.Tack welding butt joint groove can be fixed workpiece 27 to be welded well, improves the precision of later welded.
Step 30 is pressed card, uses anchor clamps that plate is pressed and is stuck on the supporting tool.Particularly; Anchor clamps in the present embodiment have two groups of clamping arms 26; The quantity of every group of clamping arm 26 is seven; Two groups of clamping arms 26 lay respectively at the both sides of workpiece 27 to be welded; The quantity of clamping arm 26 can be confirmed according to the length of workpiece 27 to be welded; Select the clamping arm 26 of suitable quantity, guarantee to compress effect.
Step 40, the welding condition of adjustment welding gun;
Particularly, adopt double-wire welding gun, the welding condition of adjustment welding gun comprises: the preceding wire bond of adjustment double-wire welding gun connects electric arc, and it is short and hard to make that said preceding wire bond connects electric arc, has penetration power; The back wire bond of adjustment double-wire welding gun connects electric arc, makes that said back silk electric arc is long and soften, have diversity, and a power is high by 6～20% after the preceding silk power ratio of said double-wire welding gun; Adjust the double-wire welding gun angle, make vertical with plate, the back silk of preceding silk of double-wire welding gun become 15～25 degree angles with plate.Technological parameter through the adjustment double-wire welding gun has guaranteed that the welding arc of double-wire welding gun does not disturb mutually, thereby has effectively guaranteed the welding quality of double-wire welding gun.
Step 50, plate welding, two welding guns from the butt joint groove of centre to the equidirectional symmetry welding of the butt joint groove of both sides.
Particularly, in the present embodiment, the quantity of butt joint groove is odd number (five), and the plate welding comprises the steps:
As shown in Figures 2 and 3; Workpiece 27 reverse side welding to be welded; Adopt the middle first butt joint groove, 31 welding of double-wire welding gun welding earlier; Adopt two double-wire welding guns symmetry welding both sides second butt joint groove 32 and the 4th butt joint groove 32s successively then, the 3rd butt joint groove 33 and the 5th butt joint groove 33s.
After per pass butt joint groove is accomplished welding, make workpiece 27 to be welded be cooled to room temperature, continue the welding of docking groove together down.
Like Fig. 4 and shown in Figure 5, workpiece 27 positive welding to be welded; After workpiece 27 reverse side welding to be welded is accomplished; Be cooled to room temperature; Unclamp clamping arm 26; To be positioned on the brace table 22 after workpiece 27 upsets to be welded; On brace table, reserve anti-deformation, anti-deformation reduces to the second butt joint slope, both sides the 32 ' and the 4th butt joint groove 32s ', the 3rd butt joint groove 33 ' and the 5th butt joint groove 33s ' from the middle first butt joint groove 31 ' successively.Particularly; Between brace table 22 and cushion block 23, place the pad of different-thickness; For workpiece 27 to be welded is reserved anti-deformation; Reserving the size of anti-deformation can confirm according to factors such as engineer testing condition, welding condition, workpiece to be welded; For example; Thickness from the centre to the pad of the butt joint groove of both sides can be set at 4mm, 2mm and 1mm, and then to reserve anti-deformation be 4mm, 2mm and 1mm.
The plate welding method that present embodiment provides adopts two welding guns to weld to the equidirectional symmetry of the butt joint groove of both sides from the butt joint groove of centre.The stress that produces of balance when welding plate effectively, and distribute heat rapidly, thereby make that the sheet metal deformation after the welding is more even, the distortion that produces in the time of can reducing large-sized plate welding reduces postwelding adjusting workload, enhances productivity.
And present embodiment adopts double-wire welding gun to carry out the plate welding, through the welding condition of adjustment double-wire welding gun, has improved the processing parameter matching property of double-wire welding gun, has improved welding efficiency.
With reference to figure 6, the enforcement sketch map of the plate welding method that Fig. 6 provides for third embodiment of the invention.
The plate welding method that plate welding method that present embodiment provides and above-mentioned first embodiment provide is basic identical, and distinctive points is as described below:
In the present embodiment; Adopt seven flat sheet butt joints; Form six butt joint grooves; The butt joint groove is respectively the first butt joint groove 31, the second butt joint groove 32, the 3rd butt joint groove 33, the 4th butt joint groove 31s, the 5th butt joint groove 32s and the 6th butt joint groove 33s; The first butt joint groove 31 docks groove 31s symmetry with the 4th; The second butt joint groove 32 docks groove 32s symmetry with the 5th, the 3rd butt joint groove 33 and the 6th butt joint groove 33s symmetry.
Plate welding method that present embodiment provides realizes the welding of seven plane plates, also has the technique effect of the plate welding method that first embodiment provides, and repeats no more at this.
Need to prove, in the above-described embodiments, when the thickness of plate is smaller, can only weld a face of plate, just only implement positive welding of plate or reverse side welding, can reduce welding sequence, improve welding efficiency.
Need to prove in addition; Plate welding method provided by the invention; Can be to flat sheet; Curved surface sheet material; Plane section bar and curved section bar welding; Can be according to the actual size of plate; Adopt the plate butt joint more than three or three; The butt joint groove that butt joint forms to plate; Take the welding of two welding gun symmetries; The stress that plate produced when balance was welded effectively; And distribute heat rapidly, thereby make that the sheet metal deformation after the welding is more even, the distortion that produces in the time of can reducing large-sized plate welding; Reduce postwelding adjusting workload, enhance productivity.
What should illustrate at last is: above embodiment is only in order to illustrating technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (9)
1. a plate welding method is characterized in that, comprising:
On supporting tool, assemble plate, at least three plates are docked, form at least two butt joint grooves;
Tack welding butt joint groove is fixed plate;
Press card, use anchor clamps that plate is pressed and be stuck on the supporting tool;
The welding condition of adjustment welding gun;
Plate welding, two welding guns from the butt joint groove of centre to the equidirectional symmetry welding of the butt joint groove of both sides.
2. plate welding method according to claim 1, said welding gun are double-wire welding gun;
The welding condition of said adjustment welding gun comprises:
The preceding wire bond of adjusting said double-wire welding gun connects electric arc;
The back wire bond of adjusting said double-wire welding gun connects electric arc, and silk power is high by 6～20% after the preceding silk power ratio of said double-wire welding gun;
Adjust the double-wire welding gun angle, make vertical with plate, the back silk of preceding silk of double-wire welding gun become 15～25 degree angles with plate.
3. plate welding method according to claim 1 and 2 is characterized in that, the quantity of said butt joint groove is odd number, and said plate welding comprises:
The middle weld seam of double-wire welding gun welding is earlier adopted in the welding of plate reverse side, adopts two double-wire welding guns symmetry welding both sides weld seam successively then;
After per pass butt joint groove is accomplished welding, make plate be cooled to room temperature, continue the welding of docking groove together down;
The positive welding of plate after said plate reverse side welding is accomplished, is cooled to room temperature, unclamps anchor clamps, with being positioned on the supporting tool after the plate upset, on supporting tool, reserves anti-deformation, and the butt joint groove reduces to both sides butt joint groove anti-deformation successively from the centre;
The positive welding of plate welding laterally gradually blocks the plate pressure to supporting tool with anchor clamps, the distortion of control plate outside weld seam.
4. plate welding method according to claim 1 and 2 is characterized in that, the quantity of said butt joint groove is even number, and said plate welding comprises:
Two double-wire welding guns symmetry welding both sides weld seam is successively adopted in the welding of plate reverse side;
After per pass butt joint groove is accomplished welding, make plate be cooled to room temperature, continue the welding of docking groove together down;
The positive welding of plate after said plate reverse side welding is accomplished, is cooled to room temperature, unclamps anchor clamps, with being positioned on the supporting tool after the plate upset, on supporting tool, reserves anti-deformation, and the butt joint groove reduces to both sides butt joint groove anti-deformation successively from the centre;
The welding of plate formal dress is welding laterally gradually, and the both sides plate is upturned gradually, with anchor clamps plate is pressed and blocks to supporting tool, the distortion of control plate outside weld seam.
5. plate welding method according to claim 1 and 2 is characterized in that, the welding sequence of each bar butt joint groove all is to weld to the other end from an end that docks groove.
6. plate welding method according to claim 3 is characterized in that, said plate is six plane section bars, and the quantity of said butt joint groove is five.
7. plate welding method according to claim 1 and 2 is characterized in that, the tack welding length of said tack welding butt joint groove is 50～200mm, and the tack welding spacing is 500～1000mm.
8. plate welding method according to claim 7 is characterized in that, said tack welding length is increased by the butt joint groove of butt joint groove to the centre of both sides successively.
9. plate welding method according to claim 1 and 2 is characterized in that, the cross section of said butt joint groove is U type, V-type, HV type, Y type, HY type or I type, and the joint of said butt joint groove leaves the gap of 0～4.0mm.
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| CN 201110284075 CN102350563B (en) | 2011-09-22 | 2011-09-22 | Sheet welding method |
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| CN 201110284075 CN102350563B (en) | 2011-09-22 | 2011-09-22 | Sheet welding method |
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| CN102350563B CN102350563B (en) | 2013-06-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286460A (en) * | 2012-02-27 | 2013-09-11 | 上海拖拉机内燃机有限公司 | Automatic welding process for vehicle body part |
| CN103551703A (en) * | 2013-10-23 | 2014-02-05 | 长春轨道客车股份有限公司 | Process for synthesizing automatic welding of CRH5 vehicle side wall sectional material |
| CN105252118A (en) * | 2015-11-20 | 2016-01-20 | 辽宁忠旺特种车辆制造有限公司 | Welding process for rear door of self-supporting van vehicle |
| CN107030369A (en) * | 2016-11-18 | 2017-08-11 | 广西大学 | A kind of large-sized aluminium alloy flat board agitating friction welding clamp |
| CN107999987A (en) * | 2017-12-14 | 2018-05-08 | 辽宁忠旺特种车辆制造有限公司 | A kind of welding procedure of container side plate |
| CN106808129B (en) * | 2015-12-01 | 2018-08-17 | 中国人民解放军装甲兵工程学院 | A kind of contravariant clamp for thick plates |
| CN108453354A (en) * | 2018-03-07 | 2018-08-28 | 上海工程技术大学 | A kind of butt welding process suitable for aluminium alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239412A (en) * | 2008-03-14 | 2008-08-13 | 唐山轨道客车有限责任公司 | Welding for large scale abutting joint connection sectional material and pressing-clipping technique |
| CN101337306A (en) * | 2008-08-11 | 2009-01-07 | 唐山轨道客车有限责任公司 | Welding process of section steel structure |
-
2011
- 2011-09-22 CN CN 201110284075 patent/CN102350563B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239412A (en) * | 2008-03-14 | 2008-08-13 | 唐山轨道客车有限责任公司 | Welding for large scale abutting joint connection sectional material and pressing-clipping technique |
| CN101337306A (en) * | 2008-08-11 | 2009-01-07 | 唐山轨道客车有限责任公司 | Welding process of section steel structure |
Non-Patent Citations (2)
| Title |
|---|
| 阚炳学 等: "正交异性桥面板单元焊接工艺及变形控制", 《焊接技术》 * |
| 陈倩清 主编: "《船舶焊接工艺学》", 31 December 2005 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286460A (en) * | 2012-02-27 | 2013-09-11 | 上海拖拉机内燃机有限公司 | Automatic welding process for vehicle body part |
| CN103551703A (en) * | 2013-10-23 | 2014-02-05 | 长春轨道客车股份有限公司 | Process for synthesizing automatic welding of CRH5 vehicle side wall sectional material |
| CN105252118A (en) * | 2015-11-20 | 2016-01-20 | 辽宁忠旺特种车辆制造有限公司 | Welding process for rear door of self-supporting van vehicle |
| CN106808129B (en) * | 2015-12-01 | 2018-08-17 | 中国人民解放军装甲兵工程学院 | A kind of contravariant clamp for thick plates |
| CN107030369A (en) * | 2016-11-18 | 2017-08-11 | 广西大学 | A kind of large-sized aluminium alloy flat board agitating friction welding clamp |
| CN107999987A (en) * | 2017-12-14 | 2018-05-08 | 辽宁忠旺特种车辆制造有限公司 | A kind of welding procedure of container side plate |
| CN108453354A (en) * | 2018-03-07 | 2018-08-28 | 上海工程技术大学 | A kind of butt welding process suitable for aluminium alloy |
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| CN102350563B (en) | 2013-06-19 |
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Address after: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee after: CRRC TANGSHAN CO., LTD. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: Tangshan Railway Carriage Co., Ltd. |